It's always guaranteed to be a a great time when Hollywood meets Koreawood. When our favorite actors or musicians collide with our favorite Korean stars, there's nothing more entertaining. Let's take a look at some of the best appearances!

When Paris Hilton appeared on "Infinite Challenge," I thought it was going to be awkward and strange but it was surprisingly beyond hilarious. Mainly because the comedians of the show were acting like actual 14-year-old fanboys. Hilton was great on the show and really did her best not to act like she's the princess of the world. Her appearance on the show did wonders for her reputation in Korea.

There's nothing Hugh Jackman does wrong. He's the most likeable person in Hollywood and possibly the world, so when he gets his handsome butt on Korean tv, you know it's going to be one heck of a show. Plus, seeing him lift Kang Ho Dong by his pants is always a fun time. Watch his charming ways here:

SNSD's Tiffany interviewed mega superstar Brad Pitt for "World War Z" and I don't know who people were more jealous of, Tiffany interviewing Brad Pitt or Brad Pitt being interviewed by Tiffany!

2PM's Jay Park got the chance to sit down and interview Lady Gaga during her appearance in America and boy was our Jay really nervous!

Fly to the Sky's Brian Joo sat down with Mariah Carey back in the day and it went something like this: